The 8th International KRDB Workshop continues the tradition of annual
international workshops devoted to facilitate cross-fertilization between the
fields of knowledge representation (KR) and databases (DB). In particular,
KRDB-2001 will focus on

Modeling, Querying and Managing Semistructured Data

Semistructured data are data that are self-describing, irregular, and with a
structure that is partially known, or subject to frequent changes. They are
usually formalized in terms of labeled graphs, and capture data as found in
many application areas, such as web information systems, digital libraries,
and data integration. Database researchers are studying several aspects of
semistructured data, including how to model such data, how to query and
restructure them, and how to store and manage them. On the other hand, there
are many kinds of reasoning that can be carried out on semistructured data in
order to support the above tasks. For instance, the discovery of certain
regularity may help in deciding the appropriate storage structures in a
particular context, or, the fact that a certain schema subsumes another one
may help in comparing data coming from different sources, or in translating
data from a certain format to another one. The goal of the workshop is to
bring together people from the Database and the Knowledge Representation and
Reasoning communities, in order to compare different points of views and
various sets of techniques that can be used for the tasks related to
Modeling, Querying and Managing Semistructured Data.

Invited talk

ABSTRACT: Lixto is a system and method for the visual and
interactive generation of wrappers for Web pages under the supervision of a
human developer, for automatically extracting information from Web pages
using such wrappers, and for translating the extracted content into XML. In
this talk, we describe some advanced features of Lixto, such as disjunctive
pattern definitions, specialization rules, and Lixto's capability of
collecting and aggregating information from several linked Web pages. We
illustrate these features with significant examples from the commercial
domain.

For more information on the workshop, including registration, please check the
Web page of KRDB-2001 at
http://www.dis.uniroma1.it/~lenzerini/krdb01.
Enquiries about the KRDB-2001 workshop can be made by mailing to
lenzerini@dis.uniroma1.it.